Napoleon Chagnon: Blood is their Argument – “‘It’s almost always for revenge. Blood is their argument. The Yanomamö will always attempt to avenge the death of a kinsman. It may take them a long time, and when the tables are turned on the guys that did it, like they get too small as a group, then it may appear to be a preemptive strike, but it has some historical roots. It’s almost never a case where they attack another Yanomamö village preemptively for no reason at all. It’s usually a consequence of some previous argument.'” – via habitable worlds: Darwin’s Dangerous Clan. see also Historical Reality: Infanticide vs Abortion @occam’s razor.

Manly Sweat Makes Other Men More Cooperative – “A chemical component of other guys’ sweat makes men more cooperative and generous, new research says. The study is the first to show that this pheromone, called androstadienone, influences other men’s behavior and reinforces the developing finding that humans are susceptible and responsive to these chemical signals.”

120,000 Years of Cancer – “A Neanderthal who lived more than 120,000 years ago had cancer of the bones, in the earliest known incidence of the disease found in the human fossil record, a new study reports.”

The Gentleman Naturalist – “[Darwin and Wallace’s] papers were presented to the Linnean Society in July 1858, and met with silence: as Desmond and Moore say, ‘no fireworks exploded, only a damp squib’.”

bonus bonus bonus bonus bonus: Life wasn’t all trouble at mill – “[T]he Industrial Revolution came as a tremendous boom to a lot of working people: they earned far more than they had done before, escaped lives of crushing poverty and for the first time began to exert some measure of control over their lives.”